package com.maoslv.security;

import com.alibaba.fastjson.JSON;
import com.maoslv.dto.Result;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

//登录失败
@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {
    @Override
    public void onAuthenticationFailure(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws IOException, ServletException {
        //设置响应回去的类型
        httpServletResponse.setContentType("application/json;charset=UTF-8");
        ServletOutputStream outputStream = httpServletResponse.getOutputStream();
        String message = "用户名或密码错误";
        if (httpServletRequest.getAttribute("exception") != null) {
            message = (String) httpServletRequest.getAttribute("exception");
        }

        outputStream.write(JSON.toJSONString(Result.fail(message)).getBytes("UTF-8"));
        outputStream.flush();
        outputStream.close();
    }
}
